Achemist is studying a macromolecule that has been isolated from a cell. which observation would provide the strongest evidence that the role of the macromolecule is to store genetic information?

A macromolecule that can store genetic information must be a DNA or RNA molecule. So, the chemist can confirm if the macromolecule is DNA/RNA by using basic DNA/RNA detection methods. Some of them are

Explanation:

DNA/RNA precipitation: Precipitation method is a simple and straightforward method to test the presence of DNA/RNA in any sample. To perform this test, chilled ethanol is added in a double volume of sample with a 1/10 volume of sodium acetate. If the genetic material is present, it will precipitate in alcohol.

Spectrophotometric analysis: DNA/RNA absorbs UV light at 260nm wavelength. Thus, we can determine the presence of DNA by taking the 260/280 ratio through a spectrophotometer.

Fluorometric analysis: In this method, we can use any dye that can intercalate the DNA molecule. Later on, we can detect the dye signal using a fluorometric to confirm the presence of DNA.

Gel electrophoresis: DNA has a negative charge. In the gel-electrophoresis experiment, it will travel towards the positive electrode. Briefly, the macromolecule sample can be loaded on 0.8% agarose gel and stained with ethidium bromide. After 20 minutes, the chemist can check under UV light and if he sees a band, it confirms the presence of DNA/RNA.

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle